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Scilla [17]
2 years ago
10

I need help, ACTUAL ANSWERS PLEASE

Chemistry
2 answers:
Yakvenalex [24]2 years ago
6 0
What’s the question?
Hoochie [10]2 years ago
3 0
What’s the question you need help with?
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Suppose 550.mmol of electrons must be transported from one side of an electrochemical cell to another in 49.0 minutes. Calculate
nekit [7.7K]

Answer:

18.0 Ampere is the size of electric current that must flow.

Explanation:

Moles of electron , n = 550 mmol = 0.550 mol

1 mmol = 0.001 mol

Number of electrons = N

N=N_A\times n

Charge on N electrons : Q

Q = N\times 1.602\times 10^{-19} C

Duration of time charge allowed to pass = T = 49.0 min = 49.0 × 60 seconds

1 min = 60 seconds

Size of current : I

I=\frac{Q}{T}=\frac{N\times 1.602\times 10^{-19} C}{49.0\times 60 seconds}

=\frac{n\times N_A\times 1.602\times 10^{-19} C}{49.0\times 60 seconds}

I=\frac{0.550 mol\times 6.022\times 10^{23} mol^{-1}\times 1.602\times 10^{-19} C}{49.0\times 60 seconds}=18.047 A\approx 18.0 A

18.0 Ampere is the size of electric current that must flow.

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What is water clarity and why is it important?
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it's a measure of how far down light can penetrate through the water column. ... Because water clarity is closely related to light penetration, it has important implications for the diversity and productivity of aquatic life that a system can support

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Why cant magnesium ions be detected in a flam test?
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When magnesium ion doesn't give any characteristics colour with the flame test as electronic transisitons do not give out visible light.
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How many electrons would an atom need to have before it can begin filling the 3s sub level?
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B.) two diploid cells

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